Type-writing machine.



A. G. F. KUROWSKI. TYPE WRITING MACHINE.

APPLICATION FILED SEPT. 11, 1914.

1,175,277. Patented Mar. 14, 1916.

2 SHEETS-SHEET I.

A. G. F. KUROWSKI.

TYPE WRITING MACHINE.

APPLICAT ION FILED SEPT. 11, m4.

1,175,277, Patented Mar. 14, 1916.

2 SHEETSSHEET 2- 'of line-spacing operations have been formed.

UNITED STATES PATENT OFFICE.

ALFRED G. F. KUROWSKI, OF NEW YORK, N. Y., ASSIGNOR TO UNDERWOOD TYPE- WRITER COMPANY OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Mar. 1 4, 1916.

Application filed September 11, 1914. Serial No. 861,168.

determined number of line-spacing operations. By a process of mechanical counting, the line-spacing mechanism is locked against further actionwhen a given number per- A revoluble member, mounted upon the carriage, has teeth whereby it may be advanced step by step, through the action of an auxiliary pawl, which is operated by the line-spacing lever concomitantly with the operation by said lever of the line-spacing wheel. Said revoluble member is provided with graduations numbered from zero up, and has stop seats representing in consecutive order the ascending enumeration of linespaces, into any one of which-seats a tooth or stop, mounted on an idle annular member concentric with the revoluble member, may enter for the purpose of determining the number of lines to be spaced. The number of seats on the revoluble member may agree with the number of teeth thereon. The number of seats available to receive the stop may be increased by the provision of a second revoluble member, equipped with an equal number of stop seats, and capable of receiving the same stop. Since more lines may requireto be spaced than permitted by the seats on the first revoluble member, said member is provided with means whereby it will, in a succeeding revo-- lution, carry with it the second revoluble member; and the adjustable tooth or stop,

being placed in a seat upon the second revoluble member, will allow the spacing of lines to continue beyond the capacity of the first revoluble member.

The stop having been entered in any one of the seats of either'of the revoluble members, and the revoluble member or members having been rotated to the point where the stop becomes operative by engaging a dog lying in its path, said dog is tripped out of engagement with a hook, that has been held by said dog out of the path of the line-spacing lever; whereupon said hook under the act on of a spring, rises into the path of the line-spacing lever, locking the latter.

The invention further includes restoring means, Whose operation, when it is desired to start the machine afresh, enables the return of the counting mechanism to zero, and releases the line-space lever. The restoring means include a sliding member which, in operation, meets an inclined surface on the locking hook, and in moving forwardly against that surface, cams the hook out of its locking position, thus releasing the linespacing lever and returning the hook to its inoperative position, in which latter position, it is again engaged and held by the retaining dog. Said restoring means, also, in the same movement, act upon the detent which holds the revoluble members in their advanced positions against the action of springs tending to return them to their normal positions, releasing said detent from such engagement and thus allowing the revoluble members to be returned to their normal positions by their springs.

Other features and advantages will hereinafter appear.

In the accompanying drawings, Figure l is a perspective elevation of a portion of a platen including theline-spacing mechanism therefor, and the locking mechanism for the line-spacing lever. Fig. 2 is a vertical section through the revoluble line-space indicating members and through allied I parts. Fig. 3 is a top plan view of the line-space indicating members, partly broken away to show the operative conjunction between saidmembers. Fig. 4 is a perspective elevation, in section, of the lower revoluble member. Fig. 5 is a similar view of the upper revoluble member. Fig.- 6 is a similar view of the connecting sleeve between the upper and lower revoluble members. Fig. 7 is a similar view of anidle ring to carry an engaging member. Fig. 8 is a similar view of an adjustable stop or engaging member. Fig. 9 is a perspective elevation of a central post or shaft to carry the lower and upper revoluble members, with a screw cap therefor.

Fig. 10 is a longitudinal view showing an end portion of the platen with line-space wheel, the revoluble line-space counting means, and the lock for the line-spacing lever, also showing in section the line-spacing lever and the case to contain some of the operative elements. Fig. 11 is a top plan. v ew showing the line-spacing lever prior to operation, the revoluble members, and the pawl in position to engage theteeth of the lower member, whereby said members are operated in line-spacing movements of the lever. Fig. 12 is a similar view showing the line-spacing lever as swung in its operative movement, and the pawl in cooperat on w1th the lower revoluble member, this view also showing the action of the line-spacing lever volves independently until its stud engages a corresponding stud upon the upper revo- Iuble member. showing the stud upon the low er revoluble member moved around until it is 1n contact with the stud upon. the upper revoluble member, whereby further movement of the lower revoluble member will carry the upper revoluble member with it. Fig. 15 is a detail view showing the restoring sliding bar in the act of camming the locking hook to disengage the line-spacing lever.

The present invention is shown as applied to an Underwood typewriting machine, being supported upon the platen frame in the neighborhood of the line-spacin lever, whereby the lock for said lever forming part bf this invention is adapted to be introduced within and removed from the path of said line-spacing lever in a simple and expeditious manner.

The platen is here shown by the numeral 1, having an axle 2 supported by platen frame 3 and carrying line-space wheel 4, sa1d platen frame also having mounted thereon a line-spacing lever 5, an operating arm 6,

slide 7 and pawl 8. The line-spacing lever 5 moves in its operationsbetw'een stops 9 and 10.

' Alock consisting of an arm 11 arranged in the path of movement of the lever 5 and pivoted to the platen frame as at 12 at its rear end, has at its forward end a hookshaped portion 13, adapted, when said for ward end iselevated, to engage the lever 5,

and to prevent the operative movement of said lever. Normally, however, the arm '11- is de'prcssed,so that this book portion 13 lies below the horizontal plane of movement of the lever '5, to be'non-interfering therewith, the heel or tang of said arm 11 having a shoulder or rear abutment 14 to provide Fig. 14 is a simllar viewlodgment for a dog 15, which is pivoted as at 16 to the platen frame, and has a rearward or depending extension 17 lying in a position to be acted upon by releasing means.

I A spring 18 connected with a spur'19 extending below the pivotal portion of thearm '11, has suitableconnection at its opposite end wlth the platen frame, whereby tension is conveniently applied to the arm 11 to hold said arm in engagement with the dog15, and to swing said arm into the locking position whenthe dog;15 has been released. from its engagementwith the heel of said arm.

A disk 20 having a dial portion 21, which may be provided with'graduations, is mounted by a hub portion '22 upon an axle, stud or post 23 that is introduced through the lower and upper portions of plates 24,25 respec+ tively, of the casing which incloses some of the operativepartsofthis apparatus, said stud or post 23 havin a diminished upper or post. 23 has a lower head or flange 28 portion 26 forming aoulder 27. Said stud. j

which abuts against the under surface of the plate '24, and a screw 29whichis threadedwithin theend of the diminished portion 26, the latter being interiorly threaded. to re. ceive it, and the head-of said screw impingmg upon the upper plate 25, which may be countersunk to receive it. Thus the said post or stud serves to unite theupperand lower] portions of the casing'and also forms a vertical journalor bearing, luble disk 20, whose hub 22 is pivoted thereon.

The disk 20'has peripheral ratchet teeth 30, which may extend .radiallyfrom an annular flange 31, and said disk also carries upstanding teeth 32 arranged in a concentrio row and spaced apart to receive .a stop between them for a purpose to be described hereinafter, said teeth 32 corresponding in number with the number of ratchet teeth 30.

A- sleeve 33,-placed about stud 23, has lower lips or extensions 34, which are adapt ed to enter key slots 35 formed in a disk 20 carrying the revo to hold said sleeve 33 from rdtation independently of said disk,said sleeve 33 also having a surrounding flange 36 carryinga vertical pin or projection 37,'which latter is introduced within a concentric groove 38 in the lowersurface of a disk 39, which is pivoted upon the diminished portion 26 of the stud 23, and has a dial 40 with gradua'tions upon itsupper surface. Thus the disk 39 is mounted to rotate upon the surface 01 the. flange'36, and, excepting where a pinor projection 41, lying in the groove 38, is ,en aged by the pin or projection 37 upon said auge 36, the disks 20 and 39 are relativelyindependent in their movements though they may, by means indicated below, operate in series or tandem.

Surrounding the sleeve 33 is an idle collar 42, having a radially: extending tooth 43, said collar also having a threaded orifice 44 in its peripheral edge to receive a screw stem 45 which is incased by a tubular member or sleeve 46 forming a stop and having a radial tooth 47 which is adapted to enter the space between any adjacent two of the teeth 32 upon disk 20, the tubular member 46 being rotatable upon stem 45 to bring said stop tooth 47 into the desired position for that purpose, and said tubular member 46 being slidable upon said stem 45 against the tension of a-helical spring 48 which surrounds the stem 45 within the tubular member and engages at its opposite ends respectively with the inward end of a tubular member or stop 46 and the outerward flange or head 49 of stem 45 over which said tubular member 46 is slidable. Said stop tooth 47 is also adapted to engage between adjacent teeth 50 upon the under surface of the disk 39, as is obvious, said tubular member 46 having at its forward end a slot 51 to engage with tooth 43 upon the collar 42 when the tooth 47 is engaged either between teeth 32 upon disk 20 or between teeth 50 upon disk 39. To release said tooth 47 from either of said disks, the tubular'member or stop 46 is drawn outwardly, whereupon it can be rotated and adjusted to enter any notch upon either disk, accordingly as said disks may be adjusted.

A coiled spring 52 surrounds the hub 22 of disk 20, being engaged at one end with said disk, and at its other end with the plate 24, to normally hold the disk 20 rotated with the pin or projection 37 upon flange 36 in contact with a pin or projection 41 upon disk,39, said disk 39 having an up v Wardly extending pin or projection 53, whlch is normally drawn against a pin or When operating the device to lock the lever within the number of line-spaces represented by the lower diskalone, the purpose is to set the tooth or stop 47 in aseat provided by any two adjacent teeth 32 upon said lower disk, with the tubular member 46 aligned with a graduation whose numeral represents the number of lines to be written, whereby said tubular member 46 will be rotated with the disk 20 and caused to meet the extension 17 of dog 15 when the number of line-spaces indicated on the dial 21 at which the tooth 47 is adjusted, have been advanced.

- It will be understood that the disk'20 is rotated step by step in unison with the linespace wheel 4 in the operations of the linespacing lever, the latter having a pawl 59 pivoted at its rear end and urged in the direction of the ratchet teeth 30 by spring 60, whereby with every line-spacing movement of the lever 5, the pawl 59 is caused to rotate the disk 20 a distance equal to the space from one graduation to the next succeeding graduation. It follows, consequently, that with the disk 20 normally held at zero. the adjustment of the tubular member, which as noted is provided with a knurled surface for convenient manipulation thereof, is efl 'ected'in the manner described, so that it will become operative when a given number of line-spacing operations have been performed within the number thirty-nine for which the disk 20 is operative. With the zero indication located in the normal position of disk 20 in alinement with the extension 17 of dog 15 and the graduation numbers ascending from y 7 projection 54 lying in a concentric groove 55 in plate 25; the disk 39 also having a coiled spring 56 whose tension is exerted similarly to the tension of spring 52 upon disk 20, to hold the disk 39 in said normal position.

The dials 21 and 40, upon the respective disks, have graduation marks 57, 58 respectively, said graduation marks being spaced apart to represent degrees of movement of their respective disks as rotated step by step through the medium of the ratchet teeth 30; and said graduations, may, upon each of the zero-in clockwise direction, it follows that by adjusting the tubular member 46 in alinement with a graduation numeral representing the number of lines it is desired to write before the line-spacing lever 5 becomes looked, that when that particular number, of line-spacing operations has been performed,

the tubular member 46 will, in returning,

disks aforesaid, represent equal numbers of spaces. In the example shown in this application, 39 spaces are'denoted upon each dial, making a total of 78 spaces capable of being registered by the combined dials. With the dial marks here shown, the lower disk may be rotated one revolution to represent 39 line-spacing operations, and may then continue to rotate, carrying with it the upper disk whose dial has 39 graduations representing that number of line-spacing operations to be additionally performed within the range of the combined disks.

strike the extension 17, and thereby release the arm '11, causing the hook 13 to enter the path of. and lock the line-spacing lever 5 against further operation.

When the number of line-spacing operations exceeds the number thereof under the control of the lower disk 20, with respectto the lever locking operation, the tubular member or stop 46 is rotated to bring the tooth 47 into position to enter between teeth 50 on the disk 39, to become engaged between adjacent teeth on said diskwiththe tubular member 46 in alinement with a graduation bearing a numeral representing the number of lines which are to be written. It will be noted that in the present example,

the dial 40 of-disk 39 bears graduation numerals from 40 to 78, thereby providing a successive enumeration of the combined,

. upon a work-sheet.

disks from O to 78. With the stop rep resented by th( tubular member 46 thus set at a numeral indication upon the upper disk 39, the lower disk 20 will be rotated freely in the line-spacing operations until the projection 37 meets the projection 41 upon the disk 39, whereupon the two disks will advance in unison until'the stop 46, which is connected with the disk 39, meets the extension 17 of dog 15, whereupon the locking hook 13 will be caused to enter the path of the line-spacing lever 5 in the same manner as when operated from the disk 20.

As an example of the method of operation, Fig. 13 shows the stop 46 engaged with the disk 39 at the graduation thereon, the dog being represented opposite the zero of disk 20 in the normal position of said disk and opposite the lowest numeral of disk 39 in the normal position of that disk. Both disks 20 and 39 are thus at their starting points, and the stop therefor in position to operate the lever look when forty-five linespacing movements have been accomplished for the production, of forty-five line-spaces In Fig. 14 will be seen the same members, the disk 20 having there completed one revolution and its projection 37 having engaged with the projection 41 on disk 39 and moved said disk as shown in said figure over two line-spacing graduations, being therefore but four line'spaces distant from the dog 15, the extension 17 whereof, said stop will meet andoperate when said disk 39 has been carried through the next four succeeding line-spaces, and thus complete the forty five line-spaces for which the device was set.

It is in the performance of the last linespacing operation permitted the line-spacmg lever 5 by this device that the arm 11 is thrown upwardly to form with its hook 13 a lock for said lever, the lever 5 in its return movement, camming the arm 11 at the inclined face of the hook 13 and being caught and locked by said hook in the spring-returning action of the latter; the dog 15 meanwhile being held out of engagement with'the heel of said arm 11 by the stop 46.

The means by which the disks are heldin the advanced positions to which they are rotated by the pawl 59 comprise a pivotal detent 61 pressed by a spring 62 into yielding engagement with the ratchet teeth 30 of disk 20, whereby said disk20, as stepped forwardly by the actions of pawl 59, is held from retraction against the tension of spring 52, also similarly holding disk 39 as the latter disk is carried forwardly by disk 20. When, however, it is desired to restore the disks 20 and 39 to normal o'sition, at the same time releasing the lock in order that the line-spacing lever 5 may again be free to resume its functions, certain simple restoring means are employed, whereby the lock may be released and the detent 61 disengaged from the teeth 30 in the same operation. To this end, the detent 61 has a rear- L ward engaging spur or projection 63, which,

as shown, extends radially from an axially studs 69 upon the carriage, guiding said bar or member 66 in its longitudinal movement.

The forward edge 70 of the bar or member 66 may be rounded, and said bar or member includes in its path the rearwardly and u wardly inclined surface 71 of the book 13, when the latter is in lockin engagement with the lever 5, whereby the orward movement of said bar or member 66 as slidingly propelled by the operator, meeting and pressing against the inclined surface 71, serves thereby to cam the book 13 downwardly to remove it from the operative path of said lever 5. At the same time that this operation is being performed, a shoulder72 upon the bar or member 66 meets the spur or tooth 63 upon the detent 61 and serves in its passage to swing said detent out of engagement with the ratchet teeth 30; in, this manner releasing the disk 20 from restraint and allowing the spring 52 to restore said disk 20 to its normal position. As previously stated, the disk 39, if at that time engaged by the disk 20 and advanced away from its normal position, is also allowed to return thereto through the action of its spring 56. p

As the stop 46 is turned away from dog 15 in the action aforesaid, said dog through its spring 74 is enabled to again engage with theshoulder 14 at the heel of arm 11, as said shoulder is presented thereto in the restoring action of slide 66.

The bar or member 66 has tensional means, as the spring 73, whereby it may be returned to its normal position after performing the restoring operation aforesaid.

Variations may be resortedto within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I

claim: V

1. In a typewriting machine, in combination, avrevoluble platen, a ratchet therefor, a line counting device, a feed ratchet therefor, a. feed lever and in connection with said feed lever, a-pawl individual to each of said ratchets.

2. In a typewriting machine. in combination, a revoluble platen, a ratchet therefor,

a line counting device, a feed ratchet there-.

for, a feed lever, a pawl with which said feed lever engages to feed the platen, and a ratchets, a lock releasable in connection with said lever 'to lock said line counting device, and a stop adjustable on said line counting device for releasing said lock.

4;. In a typewriting machine having a revoluble platen and a line-spacing lever therefor, the combinationrof a'lock for said lever, means restraning said lock from engagement with said lever, and means operated by said lever in its line-spacing movements, to release said lock restraining means when a predetermined number of line-spacing operations have been performed, to thereby permit said lock to engage said lever.

5. In a typewriting machine having a revoluble platen and a line-spacing lever therefor, the combination of a lock for said lever, means restraining said look from engagement with said lever, and a train including an adjustable stop, operable by said lever in its line-spacing movements, to release said lock-restraining means when a predetermined number of line-spacing operations have been performed, to thereby permit said lock to engage said lever.

6. In a typewriting machine having a revoluble platen and a line-spacing lever therefor, the combination of a lock for said lever, means restraining said lock from engagement with said lever, a movable member, a stop carried thereby, and means communicating the line-spacing movements of said lever to said movable member, causing said stop to release said lock-restraining means when a predetermined number of line-spacing operations have been performed, to thereby permit said lock to engage said lever.

7. In a typewriting-machine having a revoluble platen and a line-spacing lever therefor, the combination of a lock for said lever, means restraining said look from engagement with said lever, a movable member having ratchet teeth, a stop carried thereby, and a pawl engaging said teeth to communicate the line-spacing movements of said lever to said movable member, causing said stop to release said lock-restraining means when a predetermined number of line-spacing operations have been performed, to thereby permit said lock to engage said lever.

8. In a typewriting machine having a revoluble platen and a line-spacing lever therefor, the combination of a lock for said lever, a spring to move said look into locking relation with said lever, means restraining said lock from such locking relation, and

means operated by said lever in its linespaclng movements to release said lock-restraining means when a predetermined number of line-spacing operations have been performed, to thereby permit said spring to move said lock into locking engagement With said lever.

9. Ina typewriting machine having a revoluble platen and a line-spacing liver therefor, the combination of a pivotal arm having ahook to engage said lever and lock it against line spacing movement, a pivotal dog to normally hold said arm with its hook out of the operative path of said lever, and

means controlled by said lever, in its sucsaid arm and thus permit said hook to move into the path of said lever and lock said lever when a predetermined number of linespacing operations have been performed.

' 10. In a typewriting machine having a revoluble platen and a line-spacing lever therefor, the combination of a pivotal arm having a hook to engage said lever and lock it against line-spacing movement, a spring to move said arm With its hook into the operative path of said lever, a pivotal dog to normally hold said armwith its hook out of said operative path, and means controlled by said lever, inits successive line-spacing movements, to release said arm and thus permit said hook to move into the path of ber having ratchet teeth, a pawl carried by 'cessive line-spacing movements, to release said line-spacing lever and engaging said ratchet teeth to rotate said member progressively with the platen, and means upon said member to engage said lock-restraining means, thereby permitting said lock to en gage said lever and lock it against further movement, when a predetermined number of line-spacing operations have been performed.

12. In a typewriting machine having a revoluble platen, a line-space counting device comprising a ratchet wheel having graduations corresponding with its ratchet teeth, a line-spacing lever, a pawl thereon to enga said ratchet teeth and rotate said whee :mccessively in synchronism with the line-spacing movements of the platen in the operations, of said line-spacing lever, a lock for said lever, means normally restraining said lock from engagement with said lever,

and a stop adjustable upon said ratchet wheel with relation to the graduations thereof, to release said lock-restraining means when a predetermined number of line-spacpredetermined number of line-spacing operations have been performed, to thereby permit said lock to engage said lever.

14. In a typewriting machine having a revoluble platen and a line-spacing lever therefor, the combination of a lock movable into the path of said lever to lock the latter restraining means to render said lock inoperative, a rotary member having graduations with progressive numeral indications representing the series of line-spaces in a complete revolution of the platen, means for communicating the line-spacing movements of the platen to said rotary member, and a stop adjusted upon said rotary member relatively to said graduations at a numeral. indication thereof representing the sum of a predetermined series of lines to be spaced, said stop becoming operative in releasing said lock-restraining means when said ro-- tary member has advanced through the number of line-spaces designated by the numeral indication aforesaid, whereby said lever be comes automatically locked at the end of a predetermined number of line-spacing op erations.

15. In a typewriting machine having a revoluble platen and a line-spacing lever therefor, the combination of a lock movable into the path of said lever to lock the latter, restraining means to render said lock inoperative, a plurality of rotary members each having graduations with progressive numeral indications continuing from one to another and representing unitedly more than the series of line-spaces in a complete revolution of the platen, means for commu-.

nicating the line-spacing movements of the platen in progressive continuation from one to another of said rotary members, and a stop adjusted upon one of said rotary members relatively to the graduations thereon at a numeral indication thereof representing the sum of a predetermined series of lines to be spaced, said stop becoming operative in releasing said lock-restraining means when said rotary member has advanced through the numberof line-spaces designated by the numeral indication aforesaid, whereby said lever becomes automatically locked at the end of a predetermined number of line-spacing operations.

16. In a typewriting machine having a revoluble platen and a line-spacing lever therefor, the combination of a lock for said lever, means to actuate said lock, means to restrain said lock-actuating means, a rotary member having line-space graduations thereon bearing'progressive numeral indications, a spring for said member, means to rotate said member against the tension of said spring insynchronism with the linespacing movements of the platen, a pivotal detent to detain said member in the positions to which rotated, and a stop adjusted upon said member at a numeral indication thereon representing the sum of a predetermined series of lines to be spaced, said stop becoming operative to release said lock-restraining means when said rotary member has advanced through the number of line-spaces designated by the numeral indications aforesaid, whereby said lever becomes automati-' cally locked at the end of a predetermined number of line-spacing operations.

17. In a typewriting machine having a revoluble platen and a line-spacing lever therefor, the combination of a lock for said lever, a spring to actuate said lock, means to restrain said lock against the action of its spring, a rotary member having linespace graduations thereon bearing progressive numeral indications, a spring for said member, means to rotate said member against the tension of said spring in synchronism with the line-spacing movements of the platen, a pivotal detent to detain said member in the positions to which rotated, and a stop adjusted upon said memher at a numeral indication thereon representing the sum of a predetermined series of lines to be spaced, said stop becoming operative to release said lock-restraining revoluble platen and a line-spacing lever therefor, the combination of a lock for said lever, means to actuate said lock, means to restrain said lock-actuating means, a rotary member having linespace graduations thereon bearing progressive numeral iindications, a spring for said member, means to rotate said member against the tension of said spring in synchronism with the linespacing movements of the platen, a pivotal detent to detain said member in the positions to which rotated, a stop adjusted upon said member at a numeral indication thereon representing the sum of a predetermined series of lines to be spaced, said stop becoming operative to release said lock-restraine ing means when said rotary member has ad vanced through the number of line-spaces from said lock-restraining means,

be returned to its normal position by its spring, whereby said lock is disengaged and moved into it's normal inoperative position to be again engaged by said restraining means in readiness for a succeeding locking operation. s

19. In a typewriting machine having a revoluble platen ar d aline-spacing levertherefor, the anmbination of a lock in the form of a pivotal hook movable into the path of said line-spacing lever, a spring drawing said hook into operative position, a pivotal dog to hold said lock inoperative against said spring, means operated by said lever to release said dog from said lock when a predetermmed number of line-spacing operations have been performed, whereby said lock is automatically moved into locking position relatively to said lever, and rneans to reset said lock and its restraining 0g. v

20. In a typewriting machine having a revoluble platen and a line-spacing lever therefor, the combination of a lock in the form of a pivotal hook to engage said lever and lock it against movement, said hook having an inclined forward surface, a spring urging said lock to the lockedposition', a pivotal dog restraining said lock against said spring 'to hold it inoperative, a revoluble member having ratchet teeth, a spring therefor, a pawl upon the line-spacing'lever to rotate said revoluble member against the tension of its spring in synchronism with the line-spacing operations of the platen, a spring-pressed detent to engage said ratchet teeth and detainsaidrevoluble memher in its positions to which rotated, an'

adjustable stop upon said revoluble member to release said lock-restraining means, permitting said lock 'to be moved into its operative position, and a slidable member to release said detent and move said hook to inoperative position, said slidable mem-.- ber, engaging in its path both said detent and the inclined forward surface of said hook whereby, in a single movement, said detent is released, freeing said revoluble member for return by its spring, and said I hook is swung from the path of said lever for ree'ngagement by said pivoted dog.

- 21. In a typewriting machine having a revoluble platen and a line-spacing lever therefor, the combination of a lock in the form of a pivotal hook to engage said lever and lock it against movement, said hook having an inclined forward surface, a spring urging said lock to the locked position, a pivotal dog restraining said lock against said spring to hold it inoperative,

a revoluble member having ratchet teeth, a spring therefor, a pawl upon the linespacing lever to rotate said revoluble member :against the'tension of its spring in 'synchronism with the line-spacing operations of the platen, a spring-pressed detent to engage said ratchet teeth andfdetain said revoluble member in its positions to which rotated, an adjustable stop upon said revoluble member to release said lock-restraining means, permitting said lock to be moved into its operative position, a slidable memher to release said detent. and move said hook to inoperative position, said slidable member engaging in its path both said detent and the inclined forward surface of said hook whereby, in a single movement, said detent is released, freeing said revoluble member for return by its spring, and

said hook is swung from the path ofsaid lever for reengagement by said pivotal dog,

and a springto return said slidable member to normal position.

22. In a typewritlng machine having a carriage, a revoluble platen, and a line-spacing lever therefor, the combination of a mechanical counting device comprising a revoluble diskmounted upon the carriage, said disk having line-space graduations bearing numeral indications corresponding in number with the line-spacing operations contained in a complete revolution of the platen,

a spring for said disk, means to rotate said disk in line-spacing steps against the tension of said spring, a lock for said linespacing lever normally held inoperative with relation thereto, and means adjustable with relation to the line-space graduations on said disk to actuate said look when a predetermined number of line-spacing operations have been performed.

23. In a typewrltmg machine having a revoluble platen, a line-spacing lever therefor, and a lock forsaid lever, the combination of a mechanical counting device comprising a plurality of independently revoluble disks each having line-space graduations. bearing numeral indications corresponding in number for each disk with the line-spacing operations containedin a complete revolution of the platen, and the numeral indications on one disk continuing progressively from those on another disk, a separate spring foreach disk, means to rotate one of said disks in synchronism with the line spacing movementspf the platen, means enabling said rotating disk to engage another disk when it has completeda revolution, and thence-forwardly to carry said other disk through a complete revolution, and a stop adjustabl with relation to a graduation on 4 either one of said disks to render said lock operative when a predetermined number of line-spacing operations have been per- 24. In a typewriting machine, the combination with a revoluble platen, a line-spacing lever, and a lock for said lever, of a mechanical counting device to automatically actuate said lock when a predetermined number of line-spacing operations have been performed, said devicecomprising a lower revoluble disk, meansto rotate said disk, a sleeve member fitting upon said disk to rotate therewith, said sleeve having a flange with a projection thereon, a second disk having a concentric groove containing a projection to be met by the projection on said flange, said second disk having an outward projection forming, a movable stop, a spring for each disk to hold it in normal position with said projections engaged, a fixed stop engaging said movable stop, and means for rotating said lower disk successively against the action ofits own spring and the action of the spring for the upper disk when the latter is engaged withsaid lower disk at the end of the first revolution.

25. In a typewriting machine, the combination with a revoluble platen, a line-spacing lever, and a lock for said lever, of a mechanical counting device to automatically actuate said look when a predetermined number of line-spacing operations have been performed, said device comprisinga lower revoluble disk, means to rotatesaid disk, a sleeve member" fitting upon said disk to rotate therewith, said sleeve having a flange with a projection thereon, a second disk having a concentric groove containing a projection to be met by the projection on said flange. said second disk having an outward projection forming a movable stop, a series of seats arranged annularlv around each of said disks in opposed relation, a spring for each disk to hold it in normal position with said projections engaged, a fixed stop en-- gaging said movable stop, means for rotating said lower disk successively against the action of its own spring and the action of the spring for the upper disk when the latter is engaged with said lower disk at the end of the first revolution, a freely movable collar mounted concentricallv with said disks, and a stop device carried by said col lar and adjustable to engage with a seat in either one of said disks to determine the number of line-spacingoperations to be performed.

26. In a typewriting machine having a carriage, a revoluble platen, a line-spacing lever therefor, and a lock for. said line-spacing lever, the combination of a mechanical counting device comprising a casing mount-' ed upon the carriage, a vertical pbst for said casing, a pair of superposed disks revoluble on said post, a spring for each disk to drive it in one direction, engaging projections for each disk, means to drive said lower disk alone from the line-spacing lever against the tension of its "spring, until, after a complete revolution, it picks up and carries with it said other disk against the chlne, the same comprising a pair of disks,

a vertical post forming a pivot therefor, means for rotating one of said disks independently of the other, and co-acting means between said disks, whereby one disk, after making a complete revolution, picks up the other disk to rotate'it therewith through a succeeding revolution, seats arranged concentrically upon said disks in opposed rela tion, an idle collar on said post, a lock-actuating stop carried by said collar to engage a seat in either one of said disks, said stop comprising a stem secured in said collar, a sleeve surrounding said stem with a radial tooth, a springbetween said stem and sleeve, said sleeve being extensible and rotatable for the engagement of its tooth in adjusted position with a seat on either one of said disks, and means between said sleeve and collar to prevent rotation of said sleeve as engaged.

28. In a typewritingmachine, having a revoluble platen and a ratchet therefor and a linespacing lever for actuating said ratchet, of a lock for said lever, and line counting disks adapted to be actuated by,

said lever, to release said lever lock. 7

29. In a typewriting machine, having a revoluble platen, and a ratchet therefor, and

a line-spacing lever engaging said ratchet, of a lock for said lever, line counting disks adapted to be actuated by said lever to effeet the release of said lever lock, and means whereby said disksmay be arranged to operate.

a line-spacing lever engaging said ratchet,

of a lock for said lever, line counting disks adapted to be actuated by said. lever to ef feet the release of said lever lock, and a.

stop adapted toengage one or the other of said disks, where the disks may bemade to operate or one may be cut out. i

31. In a typewriting machine, having a revoluble platen, anda ratchet therefor, and i a line-spacing lever engaging said ratchet,

of a lock for said lever, line counting disks adapted to be actuated by said leverto efiect the release of said lever lock, and a slidable and rotatable stop adapted to be slid and turned to engage one or the other of said disks, whereby said disks may be made to operate or one may be out out, said stop also adapted to eflect release of said lever lock.

32. In a typewritingmachine, having a revoluble platen and a ratchet for said platen and a line-spacing lever for actuatmg said ratchet, of a lock forpreventing the actuation of said lever, parallel line counting disks arranged parallel on the same axis, and a slidable and rotatable stop having means,-when slid and rotated, for adjustably engaging one or the other of said disks, said stop being adapted for releasing the lever locking device.

W. O. WESTPHAL, J ULIUS DUCKSTINE. 

